12765831 has 16 divisors (see below), whose sum is σ = 18923520. Its totient is φ = 7601760.

The previous prime is 12765821. The next prime is 12765839. The reversal of 12765831 is 13856721.

It is not a de Polignac number, because 12765831 - 2¹³ = 12757639 is a prime.

It is a super-2 number, since 2×12765831² = 325932882241122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12765792 and 12765801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12765839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4071 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (1182720).

Almost surely, 2^12765831 is an apocalyptic number.

12765831 is a deficient number, since it is larger than the sum of its proper divisors (6157689).

12765831 is a wasteful number, since it uses less digits than its factorization.

12765831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606.

The product of its digits is 10080, while the sum is 33.

The square root of 12765831 is about 3572.9303099837. The cubic root of 12765831 is about 233.7130861476.

The spelling of 12765831 in words is "twelve million, seven hundred sixty-five thousand, eight hundred thirty-one".